What Is the Fimbria?

The pilus is a short and straight filamentous structure densely covered on the surface of Gram-negative bacterial cells. It can be observed under an electron microscope. ^[1] Pili must be observed with the help of an electron microscope. The chemical component is protein and has antigenicity. ^[2]

Pili is one of the appendages on the surface of the bacterial cell, but it is shorter than the flagella and does not show a wave shape.

The chemical properties of pili are protein ^[1]

There are many types of pili, which can be divided into two categories according to their functions: common pili and common pili

Pili are spread throughout the fungus. Pili are thinner, shorter, straight, and stiffer than flagella. Pili have nothing to do with sports, but have a strong adhesion ability, which can help bacteria to cling to the surface of objects. Bacteria from aseptic hair are easily excreted by human ciliary movement, intestinal motility, or urine washing. The loss of pilus will cause the loss of pathogenicity. ^[8]